Oscillating puddling-furnace.



PATENTED MAR. l0, 19GB.

5 SHEETS-SHEET l.

y J. P. ROB. USGILLATING 'Ji-UDDMNG PURNAGE.

APPLIGATON FILED MAR. 24. 1905.

;0. 881,342. PATENTBD MAR. 1o, 19081 Y J. P. B0B. l OSGILLATING PUDDLING PURNACE.

APPLICATION FILED MAB.. 24. 1905.

5 SHEETS-SHEET 2.

, PATENTBD MAR.. l0 J. P. ROE. V USCILLATING PUDDLING FURNACB.

5 SHEETS-SHEET 3.

APPILIGATION'FILED MAB.

SHEETS-SHEET 4.

PATENTBD MAR. 10

APPLIGATION FILED MAR. 24. 1905.

No. 381,342. PATENTED MAR. le. moa.

. J. P. ROE.

' OSCILLATING PUDDLING FURNAGE.

APrLIoATIoN FILED MAR. 24. 1905.

UNITED sfrAfr JAMES P. Ron, or ro'rrs'rown, PENNSYLVANIA.

esenti.Arme PUnDLrne-FUBNAGE.

Specication of LettersPatent.

IElatented March 10, 1908.'

Applicatien filed March V24,1905. Serial No. 261,783.

To all whom fit may concern. Be itfknownthat I, JAMES P. Ron, Va c1tizenof the United States, residing at Pottstown, in the county of Montgomery and State of Pennsylvania, have invented certain new and -useful Improvements in Oscillatin'g Puddling-Furnaces; and I do declare 4,thefollowing to be a\full, clear, and exact de- ,scription of the invention, such as will enable others skilled in the art to which 1t appervtains to make and use the same.

This invention relates, generally, to puddling furnaces and particularly to thebottoms or hearths of oscillating furnaces of the type shown in U. S. Letters Patent granted to me on the '9th day of July 1901, No. 678,281.

I have found that a straight flat bottom in the type of furnace mentioned has many disadvanta es of which the following may be named: glhe center portion is too near the zone of highest temperature, resulting in destruction to the bottom and causing great difliculty in maintaining the same, and injuryto any iron that may rest temporarily at lor near the center ofthe furnace; an irregulardepth of bath when the furnace is' at an angle,- part ofthe bath being very shallow and part being too deep for a free high boil; it provides buta small available capacity for the bath, when at an angle, in proportion to the size of the furnace, and, as in any large, flat area of water cooled surface, the danger of the formation of steam pockets andthe resulting warping of the Water cooled substructure, tending to destroy the whole` bottom.

It is the purpose of my invention to obviate the objectionable features named above in oscillating furnaces and `I .accomplish this v by means of the peculiar construction and are Vrangementof the bottom, sides, and end of such furnaces as herein-after described and as illustrated in th'e accompanying drawings forming a part of this specification, and in which Figure 1, isa longitudinal vertical section through an oscillating` furnace constructed accordlng to my mven'tIon and 1n its untllted or horizontal positlon; Flg. 2, a simllar View showing the furnace tilted slightly to# ward one end; Fig. 3, a similar View showing v the furnace tilted-to a greater degree; Fig. 4,

a similar view showing the furnace tilted to a still greater angle of oscillation; and Fig. 5, a transverse vertical section through the center or middle of the furnace.

Similar. lletters refer to similel parts throughout all the views.

In the drawin s A represents the side plates of a pudd ing furnace havin their. edges in the form of segments to wh1ch theo toothed racks B are secured and which form the bottom flanges therefor. The side plates are secured together by the transverse braces C, the stack-bases D, formed with collars to receive the ends or bases of the stacks,the end brace E, the end beams F, and the angle bars G, yall of which are suitably bolted -to y the saidplates A, The furnace is supported by tubular trunnions I-I, which rest on rollers I in bearings on pillars or other` suitable supports J, so as to provide for the rocking movement or oscillation of the furnace. The heating agent is supplied through the tubular trunnlons at each side of the furnace. There are, in this instance, two stacks K, at each end of the furnace which curve over the furnace and meet above its center of length. L is a door secured to ashaft L. whichis journal'ed in the frame through which the ball or mass of metal is dischar ed from the furnace.

The racks B gear wit 1 the toothed wheels M on a shaft N, suitably supported on a sub-A frame O, below the body of the furnace, which shaft may derive its power from any prirrlie mover by suitable connection therewit The door L is o erated by a pressure cylinder l?, connected) to a cross-head Q,`wh1ch carries thev pinions Q which mesh with theteeth of racks Q" supported from the side yplates A. To the cross-head Q the ends of rods Q are connected the other ends of said rods being connected to the door L, whereby the latter is swung open and shut, as fully described. in4 Letters Patent No 678,281, above-mentioned. charged `through the openings R, and the o eration of the same may be observed t rough openings Sdn the sides thereof and through which any oxids may be introduced when `found necessary.

The bottom, or hearth proper, is so shaped that its middle or central part T is deeper or lower when the furnace is 1n a horizontal position thanthe end parts U and V. See Fig.'

The furnace is Athe curve of the end and then drop on the third, to obtain a uniform depth of bath Q aci,

fla-t part and the ends of the furnace e n J I inclined downwardly 'toward the mnh part T. The .objects of this constrru tion l are, first, to obtain a more uniform tempera` f ture throughout thf length of the heart-nlbr l increasing the depth below the zone of 'n' temperature; second, to provide greater e. pacity of furnace for a given area ol hearth when the furnace is at an angle, as shown in Fig. 3, in which the bath is indicated by the letter d; fourth, the capability of keeping the iron as it Hcomes to nature spread outA thinly and evenl)T over one-half ol the hearth, as shown in Fig. 2, in which the iron g is lettered e and the cinder f; and, fifth, when the iron is ready77 to collect it into a mass, to increase the angle-of the hearth at the starting or upper end without nndul)7 increasing the angle of the furnace with the i horizontal, as shown in Fig. 4.

The end W of the hearth is curved so as to l roll up the iron, as a means of massing it i and turning it over after it is massed, both l actions being accomplished in a similar manner. -The former by the relatively thin apron of iron sliding downthe bottom to the i curved end, where it follows the curve, see Fig. 4,- and the leading end of the apron rolling over onto the portion still on the bottom, While the latter action is accomplished by the whole mass sliding down the inclined bottom with sullcient momentum to follow bottom with the lower side up.

The hearthis formed of oxid of iron on a Water-cooled lstructure or trough which may be formed of a series ol' pipes arranged so as to form a. hearth ol the shape described, said pipes extending lengthwise the hearth and up above the bottom at each side for a lim ited distance, as described in my abovementioned patent.

The roof is composed ol' refractory brick i and is somewhat bow-shaped in longitudinal section that is to say it is made high in the l central part, as at o., to give space lor llame development, low at the points Y), near each l end, to throw the llame downward to heat l the bottom at the ends, and high at the] points c, to prevent the. eimler of' the. bath I l. claim as new and d sire to secure by liets Patent is:

l. ln an (.rscillating 'paddling furnace having a `ransverse axis of ,iscillation a hearth having its bottom inclining dmvnwardly from each end to a cemral or middle part on an obtuse angle to said ends.

2. in an oscillating paddling furnace having al transverse axis o f oscillation a hearth having a. bottom formed with its central part onv a lower plane than ity ends.

3. .ln an oscillating paddling furnace having a transverse axis of oscillation, a hearth having a bottom and side falls extending from end to end, one end wall curved upf wardlv and inwardly, and another end wall provided with means for permitting removal ol' theI charge.

4t. in an oscillating peddling furnace, having a transverse axis of oscillation a hearth .having its bottom formed with a central lnirixontal part, and its end parts inchmng thereto, and a curved end.

Vln an oscillating paddling furnace a hearth having a bottom formed of a central horizontal part andntwo inclined parts, and an arched bow-shaped roof.

6. ln an oscillatingr pmldling furnace a hearth having a bottom inclining dowm l wardly from each end and ay central horizontal part, and a roof high at the center and ends and low at the intervening parts thereof.

7. ln an oscillatingr puddling furnace a hearth having a bottom the central part of which is on a horizontal plane and the adjacent parts at each side inclining from each end to said central part, and a curved end,

and a roof having a high central part andz ends, and a low intervening part.

S. An oscillating paddling furnace having a hearth, an arched l o\i'-shaped roof, a. stack at each end of the roof, and 'means for delivering a heating agent centrally between the ends and between the hearth and roel.

lin testimon)Y whereof, l allix my signature, in presence ol' two witnesses.

JQiMlS P. HOE. Witnesses JN0. l. Barcos, H. Cmirmcm.. 

